<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input
                        placeholder="请输入内容"
                        v-model="queryInfo.query"
                        clearable
                        @clear="getUserList"
                    >
                        <el-button
                            slot="append"
                            icon="el-icon-search"
                            @click="getUserList"
                        ></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button
                        type="primary"
                        @click="addDialogVisible = true"
                    >添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table
                :data="userList"
                v-loading="loading"
                border
                stripe
            >
                <el-table-column
                    label="#"
                    type="index"
                ></el-table-column>
                <el-table-column
                    label="ID"
                    prop="id"
                ></el-table-column>
                <el-table-column
                    label="姓名"
                    prop="username"
                ></el-table-column>
                <el-table-column
                    label="邮箱"
                    prop="email"
                ></el-table-column>
                <el-table-column
                    label="电话"
                    prop="mobile"
                ></el-table-column>
                <el-table-column
                    label="角色"
                    prop="role_name"
                ></el-table-column>
                <el-table-column
                    label="状态"
                    width="100"
                >
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <el-switch
                            v-model="scope.row.mg_state"
                            @change="userStateChanged(scope.row)"
                        ></el-switch>
                    </template>
                </el-table-column>
                <el-table-column
                    label="操作"
                    width="210"
                >
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-tooltip
                            effect="dark"
                            content="修改角色"
                            placement="top"
                            :enterable="false"
                        >
                            <el-button
                                type="primary"
                                icon="el-icon-edit"
                                size="mini"
                                @click="showEditDialog(scope.row.id)"
                            ></el-button>
                        </el-tooltip>
                        <!-- 删除按钮 -->
                        <el-tooltip
                            effect="dark"
                            content="删除角色"
                            placement="top"
                            :enterable="false"
                        >
                            <el-button
                                type="danger"
                                icon="el-icon-delete"
                                size="mini"
                                @click="removeUserById(scope.row.id)"
                            ></el-button>
                        </el-tooltip>
                        <!-- 分配角色按钮 -->
                        <el-tooltip
                            effect="dark"
                            content="分配角色"
                            placement="top"
                            :enterable="false"
                        >
                            <el-button
                                type="warning"
                                icon="el-icon-setting"
                                size="mini"
                                @click="setRole(scope.row)"
                            ></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
            >
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
        >
            <!-- 内容主体区 -->
            <el-form
                :model="addForm"
                :rules="addFormRules"
                ref="addFormRef"
                label-width="70px"
            >
                <el-form-item
                    label="用户名"
                    prop="username"
                >
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item
                    label="密码"
                    prop="password"
                >
                    <el-input
                        type="password"
                        v-model="addForm.password"
                    ></el-input>
                </el-form-item>
                <el-form-item
                    label="邮箱"
                    prop="email"
                >
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item
                    label="手机"
                    prop="mobile"
                >
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区 -->
            <span
                slot="footer"
                class="dialog-footer"
            >
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button
                    type="primary"
                    @click="addUser"
                >确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed"
        >
            <!-- 内容主体区 -->
            <el-form
                :model="editForm"
                :rules="editFormRules"
                ref="editFormRef"
                label-width="70px"
            >
                <el-form-item label="用户名">
                    <el-input
                        v-model="editForm.username"
                        disabled
                    ></el-input>
                </el-form-item>
                <el-form-item
                    label="邮箱"
                    prop="email"
                >
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item
                    label="手机"
                    prop="mobile"
                >
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区 -->
            <span
                slot="footer"
                class="dialog-footer"
            >
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button
                    type="primary"
                    @click="editUserInfo"
                >确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed"
        >
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <el-select
                    v-model="seletedRoleId"
                    placeholder="请选择"
                >
                    <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id"
                    >
                    </el-option>
                </el-select>
            </p>
            <span
                slot="footer"
                class="dialog-footer"
            >
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button
                    type="primary"
                    @click="saveRoleInfo"
                >确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data () {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) {
                //合法邮箱
                return cb()
            }
            //不合法邮箱
            cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)) {
                //合法手机
                return cb()
            }
            //不合法手机
            cb(new Error('请输入合法的手机号'))
        }

        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 5
            },
            userList: [],
            total: 0,
            loading: false,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                    {
                        required: true,
                        message: '请输入用户名',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名的长度在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    {
                        required: true,
                        message: '请输入密码',
                        trigger: 'blur'
                    },
                    {
                        min: 6,
                        max: 15,
                        message: '密码的长度在6~15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    {
                        required: true,
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号码',
                        trigger: 'blur'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 查询到的用户信息验证规则对象
            editFormRules: {
                email: [
                    {
                        required: true,
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号码',
                        trigger: 'blur'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色id
            seletedRoleId: ''
        }
    },
    created () {
        this.getUserList()
    },
    methods: {
        getUserList () {
            this.loading = true
            this.$request({
                url: 'users',
                method: 'get',
                params: this.queryInfo
            }).then(res => {
                this.loading = false
                this.userList = res.users
                this.total = res.total
            }).catch(res => {
                this.loading = false
                this.$message.error('获取用户列表失败！')
            })
        },
        // 监听 pagesize 改变的事件
        handleSizeChange (newSize) {
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange (newPage) {
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        userStateChanged (userinfo) {
            this.$request.put(`users/${userinfo.id}/state/${userinfo.mg_state}`).then(res => {
                this.$message.success('更新用户状态成功！')
            }).catch(res => {
                userinfo.mg_state = !userinfo.mg_state
                this.$message.error('更新用户状态失败！')
            })
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed () {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮添加新用户
        addUser () {
            this.$refs.addFormRef.validate(valid => {
                if (!valid) {
                    return
                }
                // 可以发起添加用户的网络请求
                this.$request({
                    url: 'users',
                    method: 'post',
                    params: this.addForm
                }).then(res => {
                    this.$message.success('添加用户成功！')
                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false
                    // 重新获取用户列表
                    this.getUserList()
                }).catch(res => {
                    this.$message.error('添加用户失败！')
                })
            })
        },
        // 展示编辑用户的对话框
        showEditDialog (id) {
            this.$request.get(`users/${id}`).then(res => {
                this.editForm = res
                this.editDialogVisible = true
            }).catch(res => {
                this.$message.error('查询用户信息失败！')
            })
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed () {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交ai
        editUserInfo () {
            this.$refs.editFormRef.validate(valid => {
                if (!valid) {
                    return
                }
                // 发起修改用户信息的数据请求
                this.$request.put(`users/${this.editForm.id}`, {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                }).then(res => {
                    this.editDialogVisible = false
                    this.getUserList()
                    this.$message.success('更新用户信息成功！')
                }).catch(res => {
                    this.$message.error('更新用户信息失败！')
                })
            })
        },
        // 根据Id删除对应的用户信息
        removeUserById (id) {
            // 弹窗询问用户是否删除
            this.$messageBox.confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {
                this.$request.delete(`users/${id}`).then(res => {
                    this.$message.success('删除用户成功！')
                    this.getUserList()
                }).catch(res => {
                    this.$message.error('删除用户失败！')
                })
            }).catch(() => {
                this.$message.info('已取消删除')
            })
        },
        // 展示分配角色的对话框
        setRole (userInfo) {
            this.userInfo = userInfo
            // 在展示对话框之前获取所有角色列表
            this.$request.get(`roles`).then(res => {
                this.rolesList = res
            }).catch(res => {
                this.$message.error('获取角色列表失败')
            })
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        saveRoleInfo () {
            if (!this.seletedRoleId) {
                return this.$message.error('请选择要分配的角色！')
            }
            this.$request.put(`users/${this.userInfo.id}/role`, {
                rid: this.seletedRoleId
            }).then(res => {
                this.$message.success('更新角色成功！')
                this.getUserList()
                this.setRoleDialogVisible = false
            }).catch(res => {
                this.$message.error('更新角色失败！')
            })
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed () {
            this.seletedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style lang="less" scoped>
</style>